Environment

Air quality

Poor air quality is associated with increased risk of asthma, lung
disease, and heart disease. Ground-level ozone, commonly known as smog,
and particle pollution pose the greatest known health risks to humans.
Air pollutants can also cause damage to lake ecosystems, crops, and our
climate. The Air Quality Index, or AQI, measures five of the main
pollutants regulated by the 1990 Clean Air Act. Days are rated as "Good,"
"Moderate," "Unhealthy for Sensitive Groups," or "Unhealthy" based upon
the amount of pollutants in the air. We can increase the number of Good
days that we have by reducing our energy consumption, amount of driving,
and waste production.